[merge-tools]
beyondcompare3.args=$local $other $base /mergeoutput=$output /ro /lefttitle=parent1 /centertitle=base /righttitle=parent2 /outputtitle=merged /automerge /reviewconflicts /solo
beyondcompare3.premerge=False
beyondcompare3.regkey=Software\Scooter Software\Beyond Compare 3
beyondcompare3.regkeyalt=Software\Wow6432Node\Scooter Software\Beyond Compare 3
beyondcompare3.regname=ExePath
beyondcompare3.gui=True
beyondcompare3.priority=-1
beyondcompare3.diffargs=/lro /lefttitle='$plabel1' /righttitle='$clabel' /solo /expandall $parent $child
beyondcompare3.diff3args=$parent1 $parent2 $child /lefttitle='$plabel1' /centertitle='$clabel' /righttitle='$plabel2' /solo /ro
beyondcompare3.dirdiff=True
...
[ui]
merge = beyondcompare3
no mercurial.ini e ambas as operações (diff | merge) serão executadas no BC3